Burner



Jan. 8, 1946. J. w. MILLER 2,392,757

BURNER v Filed Jan. 7, 1943 2 Sheets-Sheet 1 I x 2 m 2%? INVENTOR. JOHNW. MILLER BY W/mdm Jan; s, 1946. WLL R 4 2,392,757

\ BURNER Filed Jan. 7, 1943 2 Sheets-Sheet 2 INVENTOR. JOHN W MILLERMy/K1412,

Patented Jam s, 1946 BURNER John W. Miller, Lansing, Mich., assignor toMotor Wheel Corporation, Lansing, Mich., a corporation of MichiganApplication January 7, 1943, Serial No. 471,542

' 8 Claims.

This invention relates to burners and more particularly to burners ofthe vaporizing pot type.

The principal object of this invention is the provision of a burner fromwhich the products of combustion (including flame) are discharged in anon-vertical direction, as for example, in a horizontal direction. Whilesuch a burner has long been desired and various attempts have been madeto produce such a burner, all those which have been heretofore made orsuggested have involved nothing more than disposing a conventionalvertical type of pot burner in a horizontal position. These have notbeen entirely satisfactory for various reasons including an inability toobtain a satisfactory premixing of the air and oil vapor in advance ofcombustion.

I have discovered that this and other disadvantages of the priorhorizontal burners can be overcome by constructing a burner with thelower part of substantially conventional vertical form and with theupper part turned or bent to a horizontal or any intermediate position.Forbest results, I have found that certain changes in the size, numberand/or disposition of the air inlet openings as compared with theconventional vertical typeare desirable. When such changes are made, theburner of this invention is free from the disadvantages of priorhorizontal type burners and is otherwise fully as good and efficient asthe conventional vertical type of burner.

For a fuller understanding of the objects, advantages and scope of theinvention, reference should now be had to the following description whenread in connection with the accompanying drawings, wherein;

Figure 1 is a vertical sectional view of a burner embodying the presentinvention;

Figure 2 is a side elevational view of the burner shown in Figure 1;

Figure 3 is an end elevational view of the burner shown in Figure 1;

Figure 4 is a top plan view of the burner shown in Figure 1; and

Figure 5 is a perspective view of the burner pot forming a portion ofthe complete burner shown in the other figures.

The burner herein shown comprises an outer casing B sealed from theatmosphere except for the large air intake opening 9 in one side thereofand a discharge opening Win the end wall II. Disposed within the casing8 is the burner proper I2. in the form of a right angle elbow ofsubstantially uniform cross-sectional area; an imperforate bottom wallIt joined to one end of the side wall I3 in sealed relation therewith;and a wall I5 Burner I2 comprises; a tubular side wall I3 partiallyclosing the other end of the side wall and joining the side wall to thecasing. The

wall I 5 is connected to burner side wall I3. and to I5. Burner end wallI5 is of pan shape having a tubular side wall I 5a and a rim portion I5bwhich is connected to casing end wall II as shown. A sleeve constructionis associated with the opening I0 of casing end wall I I comprising apair of rings I1 and I8 secured to each other in slidable telescopicrelation and extending on both sides of casing wall II andbeing securedto the outer surface thereof by means of a flange carried by ring l8.Ring I7 is axially aligned with and substantially larger than sleeve I6,the inner end thereof preferably being spaced from burner end wall I5 asshown for a purpose to be described more fully hereinafter.

Referring now particularly to Figures 1 and 5,

the burner pot is shown as divided into two-sections by a number ofimaginary planes represented by the dotted line I9 extending along thelongitudinal axis of the burner pot. Due to the formation of the sidewall, it will be understood that the upper section of the tubular burnerpot is of a substantially greater volume than the lower section. Thisdivision ofthe burner pot into sections is referred to herein because ithas been found advantageous, .even though not necessarily essential, toprovide the upper section with primary air inlet openings 20 ofdifferent quantity, size and/or location than the primary air inletopenings 2| in the lower and smaller section.

For example, in a burner comprising a tubular side wall I3 of a.substantially uniform internal cross-sectional area and having adiameter of approximately eight inches, the'disposition of the air inletopenings may be as shown in Figure 1 with the number and size ofopenings in the two sections as follows:

This arrangement results in the upper section 2 aseavor having a totalwall area of 191.6 square inches and provided with 88 primary air inletopenings of a total area of .50822 square inch; and the lowersectionhaving a total wall area of 108.1

square inches provided with 70 primary air inlet openings of a totalarea of .75659 square inch.

Secondary air is supplied to the burner outside of end wall it through aseries of secondary air inlet openings 22 formed in the side flange aof, end wall It. secondary air inlet openings 22 are preferably largerthan the primary air inlet openings 2i? and 2| and relatively moreconcentrated as shown. It will be observed that the arrangement of walls55 and II together with ring i'l form a sort of expansion chamber forthe reception of air from openings 22 whereby its velocity is reducedprior to entering ring ll adjaby sleeve l6.

Bottom wall ll of burner I2 is formed to receive liquid fuel (oil) froma supply pipe 23 in a well or depression 24. The supply of fuel to theburner from a source not shown is regulated by a conventional regulatingvalve 25. It will be observed that well 24 is located substantiallycentrally of the larger or upper section of the burner pot, thus placingthe fuel inlet 180 degrees from the burner outlet. This arrangement hasbeen found to be advantageous.

Provision is made for manually igniting the fuel delivered to the bottomof the burner through means of a lighter tube 28. In order to preventany leakage of air into the burner l2 through the lighter tube 2B.'theupper end thereof is pro vided with a hinged closure 21 adapted to sealthe interior of the tube from the atmosphere.

In use the burner of this application will nor-' mally be associatedwith a conventional combustion chamber connected to a chimney or otherdraft producing device in the usual manner. Air may be supplied to theburner by means of natural draft or by means of a draft producer, suchas a blower. associated with the air inlet opening 9 in the side wall ofcasing 8. In either case, air

It has also been found desirable to have the burner outlet opening sodisposed in relation to the imperforate bottom wall it that flamelocated at the outlet opening can "see" at least a portion of the bottomwall surface. This arrangement is believed to facilitate the generationof fuel vapors.

As used in the claims of this application: the

term "tubular is not limited to a cylindrical section but is intended todefine other sections such as square, oval, polygonal, etc.; and theterms "circumference and circumferential define the perimeter andperimetrical dimension of all such sections.

By the expression "outer one half of the circumference" as usedin theclaims in connection with the burner side wall is meant that portion ofthe side wall which is disposed above and to the left of the series ofimaginary planes defined 'by dotted line H in Figure 5; and theexpression "inner one half of the circumference" as used in the claimsin connection with the burner side wall means that portion of the sidewall which lies below and to the right of the series of imaginary planesdefined by the dotted line [9 in Figure 5.

The scope of the invention is indicated in the appended claims.

I claim:

1. A burner of the vaporizing pot type comprising a bottom wall adaptedto serve as a fuel receptacle, a tubular side wall connected to thebottom wall and extending upwardly and laterally therefrom, the end ofsaid tubular wall remote from the bottom wall being provided withadischarge opening disposed above and laterally of the central portionof the bottom wall, the axis of the end of the tubular wall remote fromthe bottom wall forming an angle of substantially less than 180 with theaxis of the end of the tubular wall adjacent the bottom wall, saidtubular wall being provided with a plurality of air inlet openingsdistributed substantially throughout its circumferential andlongitudinal extents, the total area of the air inlet openings in thatportionof the tubular wall comprising the outer one half of thecircumference thereof being less than the addition to the primary air'opening arrangement previously referred to, it is desirable to locatethe discharge opening of the burner eccentrically of the outlet endthereof as shown. That is to say, the discharge opening defined bysleeve i6 is preferably positioned above center with a major portionlocated within the upper section. The use of the sleeve l8 and thespecific location of the fuel well 24 are also determined in part bythis consideration.

total area of the air inlet openings in that portion of the tubular wallcomprising the inner one half of the circumference thereof.

- 2. A burner as defined in claim 1 wherein fuel is admitted to theburner adjacent the junction of the bottom wall with the portion of theside wall comprising the outer one half of the circumposed within thesection of the burner defined by the portion of the side wall comprisingthe outer one half of the circumference thereof.

6. A burner of the vaporizing pot type compris ing a bottom wall adaptedto serve as a fuel'rece'ptacle, a tubular side wall connected to thebottom wall and extending upwardly and laterally therefrom, the end ofsaid tubular side wall remote from thebottom wall being provided. witha'" discharge-opening disposed above and laterally of the centralportion of the bottom wall, said tubular wall being provided with aplurality of air inlet openings distributed substantially throughout itscircumferential and longitudinal extents, the average area of the airinlet openings in the portion of the side wall comprising an outer onehalf of the circumference thereof being less and the total number of airinlet openings being greater than in the portion of the side wallcomprisingthe inner one half of the circumference thereof.

7. A burner of the vaporizing pot type comprising a circumferentiallyand longitudinally continuous substantially tubular side wall ofsubstantially uniform cross-sectional area, said wall being providedwith a plurality of circumferentially and longitudinally spaced primaryair inlet openings disposed throughout substantially the entire extentof the side wall. an imperforate bottom wall joined to one end oi. theside wall and adapted to serve as a fuel receptacle, the axis of the,end of the tubular side wall remote from the .bottom wall forming anangle of substantially less than 180 with the axis of the end of thetubular wall adjacent the bottom wall, the end of the tubular wallremote from the bottom wall having a discharge opening disposed aboveand laterally of the central portion of the bottom wall, the portion ofthe burner defining the perimeter'of the discharge opening-lyinggenerally in a plane which intersects the plane of the bottom wall, andmeans for delivering fuel to the JOHN W. MILLER.

